There's a serious performance issue with the $count= parameter in the Events API.
Without $count= a sample query returns in about 0.6 seconds. With $count the identical query takes over 22 seconds.

Consider the following query:

https://api.wildapricot.org/v2.3/accounts/[accountID]/events?$filter=EndDate ge 2026-02-23 and StartDate le 2026-02-24&$sort=ByStartDate asc

This query returns 8 events and returns in 0.562 seconds. Postman timeline:

The identical query with the addition of $count=true

https://api.wildapricot.org/v2.3/accounts/[accountID]/events?$filter=EndDate ge 2026-02-23 and StartDate le 2026-02-24&$sort=ByStartDate asc&$count=true

returns the correct count but takes 22.54 seconds to return. Postman timeline:

Attached are screenshots of Postman's timeline display for the two queries.